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AWR1443: A few questions about the CFAR algorithm.

Eom doyong
Prodigy 50 points
Part Number: AWR1443
Other Parts Discussed in Thread: AWR2944

Tool/software:

Target platform: TI AWR1443, SDK Version 2.1.0.4

  1. Based on the SDK, there is no parameter to change CFAR local Max detection on/off. How can we make it possible to set to detect only “Local Max” point? Is there is any hidden parameter inside of TI SDK?

  2. We’d like to check if there is the limitation of number of max points in CFAR.
    1. What is the max number in AWR1443 SDK?
    2. If there is available method to change the number of maximum CFAR target, please let us know how to manipulate it.
  • 0
    TI__Mastermind 20605 points

    Hi Eom,

    Please find my responses as follows:

    1. You can control the peak grouping as follows:
      3. Please note that there are no hidden parameters. The HWA user guide fully describes the configuration and control that can be exercised on the HWA
    2. You can find the configuration of the detected objects list size here:
      2. The effective number of objects for which angle is computed will be obtained after the peak grouping is done following CFAR where we obtain 
        numHwaCfarDetections from the peak count register. If you are just looking to obtain more points, you can do so by adjusting the thresholds. You also need to make sure there is sufficient memory available to hold the information of all these extra detections.

    Please let me know if there are any further questions.

    Regards,

    Kaushik

  • 0 in reply to Kaushik Gowda
    Prodigy 50 points

    Hello,
    Currently, in SDK2.1.0.4, AWR1443 that I am using, can I change the format of the CFAR algorithm from Cell averaging(CFAR - CA) to order-static(CFAR - OS)?
    If possible, please tell me how to apply it.

  • 0 in reply to Eom doyong
    TI__Mastermind 20605 points

    Hi Eom,

    This mode is not supported (Please refer section from UG as below)

    Regards,

    Kaushik

  • 0 in reply to Kaushik Gowda
    Prodigy 50 points

    Thanks for the answer.

    I guess we have to use it in the established way, but from TI's point of view, is there no possibility of changing CFAR-OS internally..?

  • 0 in reply to Eom doyong
    TI__Mastermind 20605 points

    Hi Eom,

    For this device, the design is frozen, and the product has also gone to production. So, no change here.

    2nd generation radar devices (AWR2944 for example) employ HWA with CFAR-OS capability if you are interested.

    Regards,

    Kaushik